Eni i-Sigma monograde SAE 40
A single-grade SAE 40 engine oil rated API CF and API SJ for diesel engines in severe service or prone to deposits and wear.
| Classification | |
|---|---|
| Product line | Eni i-Sigma monograde 8 oils |
| SAE viscosity | 40What SAE means |
| Intended use | commercial vehicles |
| API class | What API means |
| Approvals | |
| Meets the requirements of | What an approval means |
| Typical properties | |
| Viscosity at 40 °C | 148 mm²/s |
| Viscosity at 100 °C | 14.5 mm²/s |
| Viscosity index | 96 |
| Pour point | -30 °C |
| Flash point | 230 °C |
| Base number (TBN) | 9.8 mg KOH/g |
| Density | 893 kg/m³ |
The car maker has not officially approved the entries in the “Meets the requirements of” row.
Description
Eni i-Sigma monograde SAE 40 is a single-grade engine oil from the i-Sigma monograde line for naturally aspirated and turbocharged diesel engines that work in severe service or are prone to deposits and wear.
The oil is rated API CF and API SJ and also meets the military specifications MIL-L-2104D and MIL-L-46152C. The data sheet lists no official manufacturer approvals.
Typical figures: kinematic viscosity 148 mm²/s at 40 °C and 14.5 mm²/s at 100 °C, viscosity index 96, base number 9.8, pour point -30 °C, flash point 230 °C, density 893 kg/m³.
Application
Naturally aspirated and turbocharged diesel engines in severe service or prone to deposits and wear.
Worth knowing
Next to it in the line is Eni i-Sigma monograde HBN SAE 40, with almost the same viscosity, 14.4 mm²/s at 100 °C against 14.5 mm²/s, and the same API classes CF and SJ. They differ elsewhere. The base number of this oil is 9.8 mg KOH/g and that of the HBN is 11.5, and both data sheets measure it by the same method, ASTM D 2896, so the figures can be compared; Eni links the high base number of the HBN to fuel with a high sulphur content. Compliance with MIL-L-2104D and MIL-L-46152C is claimed only for this oil, and its pour point is -30 °C against -24 °C for the HBN, both by ASTM D 5950.
Eni i-Sigma monograde SAE 50 has the same codes and the same base number, but it is the next viscosity grade, with 19.6 mm²/s at 100 °C. The article on the figures in the oil data sheet explains what the base number, the pour point and the other lines show, and why oils are not compared on a single figure.
Data current as of Check the label and the current product data sheet before you buy.
Sources: official sources of the data on this oil
- Technical data sheet (TDS) oilproducts.eni.com
- Product page on the manufacturer’s site oilproducts.eni.com
Other Eni oils
All 140 oils-
Eni i-Sigma monograde HBN SAE 40
A single-grade SAE 40 engine oil rated API CF and API SJ, with a high base number, for diesel engines in very severe service.
- API CF
- API SJ
-
Eni i-Sigma monograde 10W-20
A 10W-20 engine oil rated API CF and API SJ for diesel engines in light-duty service, meeting the requirements of Allison C-3.
- API CF
- API SJ
- MIL-L-2104D (no official approval)
- MIL-L-46152C (no official approval)
-
Eni i-Sigma monograde HBN SAE 10W
A single-grade SAE 10W engine oil rated API CF and API SJ, with a high base number, for diesel engines in severe service.
- API CF
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-
Eni i-Sigma monograde SAE 30
A single-grade SAE 30 engine oil rated API CF and API SJ for diesel engines in light-duty service, meeting the requirements of Allison C-3.
- API CF
- API SJ
- MIL-L-2104D (no official approval)
- MIL-L-46152C (no official approval)
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partly verified: some specifications could not be confirmed from an official source
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